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Acquisitions - Additional Information (Detail) (USD $)
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0 Months Ended | 3 Months Ended |
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May 23, 2014
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Nov. 30, 2014
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| Business Acquisition [Line Items] | ||
| Purchase accounting adjustments | $ (3,157,000)us-gaap_GoodwillPurchaseAccountingAdjustments | |
| Hayes Industries [Member] | ||
| Business Acquisition [Line Items] | ||
| Business Acquisition, Date of Acquisition Agreement | May 23, 2014 | |
| Cash paid for business acquisitions, net of cash acquired |
30,500,000us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired / us-gaap_BusinessAcquisitionAxis = atu_HayesIndustriesMember |
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| Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High |
4,000,000us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh / us-gaap_BusinessAcquisitionAxis = atu_HayesIndustriesMember |
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| Recognition of Goodwill due to Business acquired |
14,400,000us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_BusinessAcquisitionAxis = atu_HayesIndustriesMember |
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| Business Acquisition, Purchase Price Allocation, Intangible Assets Other than Goodwill |
10,600,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill / us-gaap_BusinessAcquisitionAxis = atu_HayesIndustriesMember |
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| Purchase accounting adjustments |
3,157,000us-gaap_GoodwillPurchaseAccountingAdjustments / us-gaap_BusinessAcquisitionAxis = atu_HayesIndustriesMember |
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| Hayes Industries [Member] | Customer relationships | ||
| Business Acquisition [Line Items] | ||
| Business Acquisition, Purchase Price Allocation, Intangible Assets Other than Goodwill |
3,300,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill / us-gaap_BusinessAcquisitionAxis = atu_HayesIndustriesMember / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember |
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| Hayes Industries [Member] | Patents | ||
| Business Acquisition [Line Items] | ||
| Business Acquisition, Purchase Price Allocation, Intangible Assets Other than Goodwill |
5,000,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill / us-gaap_BusinessAcquisitionAxis = atu_HayesIndustriesMember / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_PatentsMember |
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| Hayes Industries [Member] | Tradenames | ||
| Business Acquisition [Line Items] | ||
| Business Acquisition, Purchase Price Allocation, Intangible Assets Other than Goodwill |
2,000,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill / us-gaap_BusinessAcquisitionAxis = atu_HayesIndustriesMember / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TradeNamesMember |
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| Hayes Industries [Member] | Non-compete agreements and other | ||
| Business Acquisition [Line Items] | ||
| Business Acquisition, Purchase Price Allocation, Intangible Assets Other than Goodwill |
$ 300,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill / us-gaap_BusinessAcquisitionAxis = atu_HayesIndustriesMember / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = atu_NonCompeteAgreementsAndOtherMember |
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- Definition
Date when the business acquisition agreement was executed, in CCYY-MM-DD format. No definition available.
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- Details
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- Definition
For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of intangible assets, excluding goodwill, acquired at the acquisition date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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